00438nam a2200145 a 450000500170000000800410001702000180005804100080007608200110008410000270009524500870012226400470020930000140025670000220027020260717092718.0260717s2007    ii            000 0 eng d  a9780070616097  aeng04a515.351 aSimmons, George Finlay10aDifferential Equations : Theory, Technique, and Practice /cSimmons, George Finlay 1aNew York :bTata McGraw-Hill,c2007, 2011.  ax, 534 p.1 aKrantz, Steven G.